DS2450

更新时间： 2024-11-05 22:50:51

品牌	Logo	应用领域
达拉斯 - DALLAS		转换器
页数	文件大小	规格书
24页	525K
描述
1-Wire Quad A/D Converter

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中文翻译

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数据手册

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DS2450 数据手册

DS2450

1-Wire^TMQuad A/D Converter

www.dalsemi.com

FEATURES

PIN ASSIGNMENT

§ Four high-impedance inputs to measure

analog voltages over the 1-Wire bus

§ User programmable input range (2.56V,

5.12V), resolution (1 to 16 bits) and alarm

thresholds

V_CC

AIN-D

AIN-C

AIN-B

AIN-A

DATA

GND

§ 5V, single supply operation

8-PIN SOIC (208 MIL)

§ Very low power: 2.5 mW active, 25 mW idle

§ Built-in multidrop controller allows multiple

DS2450’s to be identified and operated on a

common 1-Wire bus

§ Responds to Conditional Search if the analog

voltage crosses the alarm thresholds

§ Channels not used as analog input can serve

as open drain digital outputs for closed-loop

control

§ Directly connects to a single port pin of a

microprocessor and communicates at up to

16.3k bits per second

§ Overdrive mode boosts communication speed

to 142k bits per second

PIN DESCRIPTION

V_CC

4.5 to 5.5 Volts

Do Not Connect

1-Wire Bus

DATA

GND

Ground

AIN-A

AIN-B

AIN-C

AIN-D

Analog Input A

Analog Input B

Analog Input C

Analog Input D

ORDERING INFORMATION

DS2450S

8-pin SOIC

§ On-chip 16-bit CRC-generator for

safeguarding data transfers

§ Unique, factory-lasered and tested 64-bit

registration number (8-bit family code + 48-

bit serial number 8-bit CRC tester) assures

absolute traceability because no two parts are

alike

§ 8-bit family code specifies device

communication requirements to bus master

§ Operating temperature range from -40°C to

+85°C

§ Compact, low cost 8-pin SOIC surface mount

package

DESCRIPTION

The DS2450 1-Wire Quad A/D Converter is based on a successive-approximation analog to digital

converter with a four to one analog multiplexer. Each input channel has its own register set to store the

input voltage range, resolution, and alarm threshold values as well as flags to enable participation of the

device in the conditional search if the input voltage leaves the specified range. Two alarm flags for each

channel indicate if the voltage measured was too high or too low without requiring the bus master to do

1 of 24

102199

12 3 4 5 6 7...24

中文翻译

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与DS2450相关器件

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DS2450S	DALLAS	获取价格	1-Wire Quad A/D Converter
DS2450S/T&R	MAXIM	获取价格	ADC, Successive Approximation, 16-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO8, 0.20
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DS246	ETC	获取价格	Analog IC
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DS2460	MAXIM	获取价格	SHA-1 Coprocessor with EEPROMAbridged Data Sheet
DS2460S	DALLAS	获取价格	SHA-1 Coprocessor with EEPROM
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DS2460S/T&R	MAXIM	获取价格	Microprocessor Circuit, CMOS, PDSO8, 0.150 INCH, SOP-8
DS2460S/T&R	DALLAS	获取价格	SHA-1 Coprocessor with EEPROM